mouthwash challenge

To drink or consume, typically a full glass, or as much as one can handle, of mouthwash. Similar to: cinnamon challenge.

How is it even possible for "the mouthwash challenge" to be popular on twitter?

mouthwash challenge by Corny Marcus January 16, 2017

Mouthwash Martini

When you put hand sanitizer in your mouth and make out with the person next to you

Hey do you want a mouthwash martini

Mouthwash Martini by Winner9956 January 17, 2022

Tennessee Mouthwash 

A tennessee mouthwash is any drink containing any amount of tennessee whisky.

Dude 1: "Dude what are you drinking?"
Dude 2: "Jack Daniels and Coke aka a delicious tennessee mouthwash!"

Tennessee Mouthwash by Lench Mob December 14, 2006

golden mouthwash 

Urinating during an oral felatio.

Unnamed female receiving golden mouthwash from occupant of H18 Rootes, Warwick University

golden mouthwash by krispy_fresh April 27, 2009

rhodesian mouthwash 

rhodesian mouthwash

A Rhodesian Mouthwash is a sexual act when someone either shits on the floor and deposits the shit into their partner's mouth, or directly shits into their mouth. Next, they cum into their partner's mouth and make them thoroughly chew the semen-shit mixture. Their partner can either swallow the substance or spit it back out, like mouthwash.

Man, that girl over there needs a hearty Rhodesian Mouthwash.

rhodesian mouthwash by 000000000000100 February 10, 2015

Cajun Mouthwash 

When pepper spray is purposely blasted into someone’s mouth.

Hey bro, that fucking cop gave me a dose of the cajun mouthwash just for running my lips at him.

Cajun Mouthwash by M.E.A.T June 8, 2019

Brockton Mouthwash 

This is a common drink in dive bars in Massachusetts, consisting of Dr. McGillicuddy's on the rocks in a plastic cup.

This is a reference to Brockton Mass, a hardscrabble town that has a fondness for bottom shelf liquor because it is cheap and effective.

Bartender: “What’l it be?”
Dive Bar Dweller: “Give me the Brockton mouthwash.”

Brockton Mouthwash by LCAlum April 4, 2019